package IMIC_TrinhCongDoc.bai03.lv2;

public class model {
public double Chuvi (use a1){
	double kq = a1.getA()*4;
	return kq;
	
}
public double Dientich (use a1){
	double kq = a1.getA()*a1.getA();
	return kq;
}
}
